Well Jhonson
I have gone through both the answers above but frankly I think insteaed using bigger fans like you have in your factory try using four small size fans (one on each side facing each other) at some where MIDDLE of the room height .
By doing this you may help in changing room air...
Hello friend. I have just signed.
The problem you have mantioned of accum. of frost on coils lowering overall performance , I had a similar problem on a chamber (Lab-line Envornmental chamber 708a-2dhx.in which I found pockets around cooling coil by-passing circulating air . Which when tackled...